Yesterday I came across a Revered Dragon in Winterhold. This thing was hard and would consistently use its drain vitality shout on me which was, for it, very effective. I died multiple times.
My character is level 63 and uses melee weapons - mostly a one-handed ebony war axe and shield / skirmisher build. Her weapons and armour are all smithed to legendary quality.
This dragon landed just outside Winterhold. Normally when I swing an axe at a dragon it's dead in a few hits, but its health hardly went down. It was like chipping away at a rockface.
I have the Aetherial Crown which 'contains' the Atronach Stone, but apparently magic absorption doesn't do anything to drain vitality. I also have the Necklace of the Firewalker which gives me 70% protection against fire, but that's not that helpful when the dragon keeps switching its attacks.
How does anyone battle these things effectively?